CVE-2020-8333 : Security Advisory and Response

A potential vulnerability in the SMI callback function used in the EEPROM driver in some Lenovo Desktops and ThinkStation models may allow arbitrary code execution.

Understanding CVE-2020-8333

This CVE involves a vulnerability in Lenovo Desktops and ThinkStation models that could lead to arbitrary code execution.

What is CVE-2020-8333?

The vulnerability lies in the SMI callback function within the EEPROM driver of certain Lenovo systems, potentially enabling attackers to execute arbitrary code.

The Impact of CVE-2020-8333

The CVSS score for this vulnerability is 6.4, indicating a medium severity issue with high impacts on confidentiality, integrity, and availability.

Technical Details of CVE-2020-8333

This section provides more in-depth technical information about the CVE.

Vulnerability Description

The vulnerability allows for arbitrary code execution due to a flaw in the SMI callback function of the EEPROM driver in specific Lenovo Desktops and ThinkStation models.

Affected Systems and Versions

Affected Product: BIOS
Vendor: Lenovo
Affected Versions: Various

Exploitation Mechanism

Attack Complexity: High
Attack Vector: Local
Privileges Required: High
User Interaction: None
Scope: Unchanged

Mitigation and Prevention

Protect your systems from CVE-2020-8333 with these mitigation strategies.

Immediate Steps to Take

Update system firmware to the version specified for your model in the Product Impact section of LEN-30042.

Long-Term Security Practices

Regularly monitor for firmware updates and security advisories from Lenovo.
Implement strong access controls and network segmentation to limit the impact of potential attacks.

Patching and Updates

Stay informed about security patches and updates released by Lenovo to address this vulnerability.